Abstract: The present invention concerns a device for driving an electromagnet for operating a pump, as well as the related method and the related dosing electromagnetic pump, the electromagnet comprising a primary winding and a moving element, capable to be attracted within the primary winding when an energising current is higher than a first threshold value so as to let a liquid dose into an external hydraulic circuit depending on the travel of the moving element, the device comprising a control logic unit, capable to control said energising current, the device being characterised in that the control logic unit is capable to detect said energising current so as to provide said energising current to the primary winding until said energising current assumes a second threshold value, depending on a value of the liquid dose to let into the external hydraulic circuit, higher than the first threshold value and not higher than a third threshold value in correspondence of which the moving element arrives at stop.

Abstract: The present invention concerns a device for driving an electromagnet (4), particularly for operating pumps, comprising a primary winding (3) and a moving element (9), the device comprising power switching electronic means (S1, S2), the device being characterised in that it comprises a control logic unit (6), apt to control said power switching electronic means (S1, S2) and to detect the value of said excitation current, the power supply of the control logic unit (6) being provided by a corresponding shunt (PP) of the primary winding (3), the control logic unit (6) controlling said power switching electronic means (S1, S2) depending on the detected value of said excitation current, so as to make the electromagnet (4) operate as auto-transformer for sufficiently providing said power supply to the control logic unit (6) maintaining the function of attracting the moving element (9) substantially unchanged.

Abstract: The invention is concerned with the technical field of machines for attaching knit or woven fabric hems to generally knit wearing apparel, and in particular, relates to a machine designed to perform such operations by precision-stitch sewing. To retain a constant match of the loops forming a lower flap in a folded hem with the loops in the upper flap while sewing the hem onto wearing apparel, the machine comprises a sewing assembly with which a hem entraining assembly and feeding assembly for a garment to be sewn are arranged to cooperate, and is characterized in that said entraining assembly includes a pair of entraining members defining a hem passageway therebetween and being kinematically connected to attain substantially equal and oppositely directed peripheral velocities.

Abstract: For orderly threading knit articles, preferably in the form of knit hems, onto the pin holder ring of a linking machine, a device is disclosed which comprises, in a supporting frame associated with the linking machine, a comb-like element having a plurality of coplanar dents arranged facing the ring pins, and arranged tangentially to the pin holder ring and movably associated with the supporting frame. The comb-like element may be connected kinematically to the pin holder ring to achieve a translation speed which is substantially equal to the peripheral rotation speed of the pin holder ring during a knitwork threading stroke. Associated with the supporting frame is a transfer assembly cooperating with the dents of the comb-like element, and an element is provided for picking up one of the knit articles threaded onto the comb-like element to set it into an advanced position on the dents.